на отрезке FN отмечена точка G. Известно что длина отрезка FG на 40см больше, чем длина QN. Какова длина отрезка FQ, если FN=16дм.? (ответ в дециметрах

Speaking Task 1. Choose the question from the card on the topic Entertainment and fedia^ prime prime and be ready to answer it after the teacher starts the conversation. Produce a speech by giving extended answers to the questions. Share your ideas with the class. Teacher organizes a Socratic seminar, which helps him/her to assess learners while they are speaking on the toplic Entertainment and Media and he/she prepares and cuts down questions and expressions beforehand. Learners sit in a circle and answer the question using in their speech some formal and Informal expressions to present logically connected information to their classmates. Expressions: Stating an opinion The way I see it... Sorry to interrupt, but... Is it okay if I jump in for a second? Can I add something here? Can I throw my two cents in? Not necessarily Interrupting If I might add something..... I beg to differ No, I'm not so sure about that That's for sure Expressing disagreement I'd say the exact opposite I have to side with somebody (name)on this one I was just going to say that In my opinion Expressing agreement If you ask me.. That's exactly how I feel As far as I'm concerned. If you want my honest opinion..... You have a point there That's not always the case​

Пусть основание = х, тогда каждая из боковых сторон = х+1
х + х+1 + х+1 = 50
3х + 2 = 50
3х = 50 - 2
3х = 48
х = 48 : 3
х = 16 м - основание

х+1 = 16+1 = 17 м - боковые стороны

Площадь можно найти разными

Например, найдем высоту (h), опущенную к основанию. Эта высота является также медианой, значит, разделит основание пополам, тогда по теореме Пифагора:
h = √(17²-8²) = √(289-64) = √225 = 15 м
S = (1/2) * 16 * 15 = 120 м²

Можно по формуле Герона:
р = 50/2 = 25
S = √(25(25-17)(25-17)(25-16)) = √(25*8*8*9) = √14400 = 120 м²

ответ: 120 м²